City centers are not built for running modern traffic, which leads to many problems
such as traffic congestion. Traffic congestion is a condition characterized by reduced flow
rate, longer travel times and increased column. One of the measures that can successfully
impact on reducing congestion, and therefore its negative consequences such as increased
external costs is congestion charging. Congestion charging is the name for the models of
fees that drivers pay to enter the city center. The charging has been successful in cities
such as London, Stockholm and Singapore. The main challenge in implementing the
charging is public resistance. In Croatia, the charging has not yet been implemented,
although in 2011 was published Congestion charging study for the City of Zagreb.